AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet - Page 22

• Manufacturer Part Number: AN10436
• Description: TDA8932B/33(B) Class-D audio amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
AN10436_1
Application note
Fig 14. TDA8933(B): SE output power as a function of
Fig 16. TDA8933(B): BTL output power as a function of
(W)
(W)
P
P
o
o
a. THD+N = 0.5 %
supply voltage
a. THD+N = 0.5 %
supply voltage
20
15
10
20
15
10
5
0
5
0
10
10
12
Remark:
R
Remark:
R
The horizontal parts in the figures indicate the region where current limiting becomes
active when a level of 2.0 A (minimum) is taken into account. It is recommended to avoid
these regions because current limiting will cause unwanted distortion (see
20
R
s
s
L
14
= 6
= 0.05 Ω, R
= 0.05 Ω and I
Figure 14
Figure 16
16
30
ESR
R
L
R
V
18
= 8
O(ocp)
L
P
010aaa105
010aaa106
= 0.05 Ω and I
= 8
(V)
V
and
and
4
6
P
Rev. 01 — 12 December 2007
(V)
= 2.0 A (minimum).
Figure 15
Figure 17
40
20
O(ocp)
are calculated with R
are calculated with R
Fig 15. TDA8933(B): SE output power as a function of
Fig 17. TDA8933(B): BTL output power as a function of
= 2.0 A (minimum).
(W)
(W)
P
P
o
o
b. THD+N = 10 %
supply voltage
b. THD+N = 10 %
supply voltage
20
15
10
20
15
10
5
0
5
0
10
10
TDA8932B/33(B) Class-D audio amplifier
R
12
L
= 6
DSon
DSon
20
14
= 0.39 Ω (at T
= 0.39 Ω (at T
16
R
L
30
= 8
AN10436
© NXP B.V. 2007. All rights reserved.
V
18
R
P
j
j
Section
010aaa108
L
010aaa107
= 25 °C),
= 25 °C),
(V)
V
= 8
P
6
4
(V)
40
20
3.2).
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